Current is defined as the flow of:

Current is defined as the flow of:

• A. The flow of electrons in a circuit
• B. The energy in a circuit
• C. A potential difference
• D. The magnetic field in a wire

Answer: (A)

Current is about the movement of electric charge. In a typical metal circuit, the charges that move are electrons, so describing current as the flow of electrons directly captures what’s happening in the wire. The other ideas aren’t the movement of charge itself: energy is what the charges carry, potential difference is the push that drives the flow, and the magnetic field is produced by moving charges (and by magnets) rather than being the flow itself. In short, current tracks how much charge passes a point per second, and in a simple circuit that movement is electrons moving through the conductor.

Current is about the movement of electric charge. In a typical metal circuit, the charges that move are electrons, so describing current as the flow of electrons directly captures what’s happening in the wire. The other ideas aren’t the movement of charge itself: energy is what the charges carry, potential difference is the push that drives the flow, and the magnetic field is produced by moving charges (and by magnets) rather than being the flow itself. In short, current tracks how much charge passes a point per second, and in a simple circuit that movement is electrons moving through the conductor.